Why does wind damage seem worse out here than in Vancouver?
Less shelter. Battle Ground sits on larger, more open parcels with fewer neighbouring structures and less tree cover to break the wind, so storms arrive with little to slow them first. Damage here tends to appear along ridges and at gable ends rather than in isolated patches.
My house was built around 2002. Is it due for a roof?
It is worth an inspection. A great deal of Battle Ground was built out in the late 1990s and 2000s, and builder-grade asphalt from that period typically reaches the end of its useful life somewhere in the twenty to twenty-five year window. That is the point where repairs stop being the cheaper path.
Do the colder nights up here actually matter for a roof?
They do, at the margins. Battle Ground runs slightly colder than Vancouver on winter nights, being further from the moderating influence of the Columbia. More freeze-thaw cycles mean water that has worked under a lifted shingle gets more chances to expand, and small gaps widen faster than they would in town.